We had forum version 5.0.2 . After upgrading to DNN version 5.6.3 from 5.5.1, when we go to access treads we get the following error...

Message: DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Modules.Forum.Posts.RenderPostAuthor(HtmlTextWriter wr, PostInfo Post, Boolean PostCountIsEven) at DotNetNuke.Modules.Forum.Posts.RenderPost(HtmlTextWriter wr, PostInfo Post, Boolean PostCountIsEven) at DotNetNuke.Modules.Forum.Posts.RenderPosts(HtmlTextWriter wr) at

the view Forum_vw_ForumUsers also gives us the following...

Msg 207, Level 16, State 1, Line 2

Invalid column name 'EnableDisplayInMemberList'.

Msg 207, Level 16, State 1, Line 2

Invalid column name 'EnablePM'.

Msg 207, Level 16, State 1, Line 2

Invalid column name 'EnableDisplayInMemberList'.

Msg 4413, Level 16, State 1, Line 2

Is there a fix for this? Or something we can do in the DB to get this working. Thanks.